Screw-neck-forming machine



H. N'. HALVERSEN.

SCREW NECK FORMING MACHINE. APPLICATION FILED Dec. I3. i919.

Patented Nov. 28, 1922.

3 SHEETS-'SHEET 1.

NVENTOR BY [aa ,fugb n] MA/TT/O-RNEY WITNESS:

H. N. HALVERSEN.'

SCREW NECK FORMING MACHINE.

Y APPLICATION FILED DEC. I3. |919.

Patented N ov. 28, 19227 3 SHEETS-SHEET 2.

` /NvENToR WITNESS:

A TTORNE Y H. N. HALVERSEN.-

scREw NECK 'FORI/IIN@ MACHINE.

APPLICATION FILED DEC. I3. 1918.4

1,437,23@ *Patented N0v.28,1922,

.3 SHEETS-SHEET 3.

WITNESS- /N VEN TOR A TTORNE Y Paeee'a Nev. aaaezz.

entre erases insane nur erase.

raftv Hans N.

HLVERSEN, OF VINELAND, NEW JRSEY, SSIGNOB TO KIMBLE GLASS COMPANY, OF CHICAGO, ILLINOIS, A COBPGRATION F II'JLINOIS.A

application mea December 1e, 191e. serial no. saisie.

.Toi whom 'ma/ l concern.: j Be it known that HANS N. HALveRsEN i v a citizen of'the United States, residing at Vineland, in the count of Cumberland and State of New Jersey, ave invented certain new and vuseful Improvements in Screw- Neck-Forming Machines, of which the folture of the invention is the production of anlautomatic machine of relatively few and simple parts for performing this work withV accuracy and speed, requiring nothing more than a minimumv amount of attention on the part of the operator or workman.

` In order that those skilled in this art may i understand how these and other desirable objects -a incorpor ting this invention, -I have illustrated a vpreferred embodiment of the same in: thejaccompanying drawings forming a part offthis specification, which shouldbe considered in connection with the following detailed description of the device, and throughout the various views of which like reference numerals refer to the same parts of the mechanism.

In these drawings Figure 1v is an with parts removedto more clearly show the construction;

Figure 2 is an elevation 'of the left-hand end of the machine; Figure 3 is an portion ofthe necking mechanism showing its relation to the vial undergoing heat treatment;

Figure 4 is a view at right-angles to that of Figure 3; and

Figures 5' and 6 ure 5 being a section on ure 6. v.

Referring to these drawings, it will be seen that the apparatus comprises an upright hollow standard 10 carrying. all of the parts ofthe mechanism; the partiallyare detail sections, Figline 5--5 of Figd aims are fulfilled in a machine.

elevation of the machine enlarged elevation of a.

formed glass-vials 11, l11, which are to be.

provided with screw-threaded necks being delivered individually or one by one from any suitable' form of supply-magazine 12 through an intermittently-rotated conveyor 13 on a hollow-shaft 14. The conveyor may 'b e 'of any, appropriate form or constructlon such as two spaced discs 15 and .16

with aligned seats or notches 17 for the v1als,conveyors of this type and their operating mechanism being well known iny the art and, therefore, being shown only in part,`

but suiiiciently,however, for a full understanding of the construction and modezot operation of the remainder of the mechanism in which the invention more particularvly resides. v`When the vials reach their uppermost position on theV conveyor they rest on suitably-supported anti-friction rollers 18, 18 instead of upon the seat 17 of the conveyor. vials'is a curved gauge or guide element 19 adjustably held in position by a supportingarm 20 mounted in any approved manner Adjacent td one .end of such as, for instance, on a stationary sbaft'21 'extended through the hollow shaft 14 on which the conveyor proper is mounted. f

' The-.uppermost vial 113 on the conveyor resting on the anti-friction rollers 18 is revolved by one or more beveled soft-rubber rollers 22, of which two are shown in the drawings, the deflection or yielding of the rubber at its point 'of contact with`thevial tending'tofhold or push the latter to the left, as the parts are viewed in Figure 1,-' against-the' guide or gauge 19. It desired, the axis of these rubber-rollers may be oblique to that of the vial to assist in holding the latter against the gauge or guide: These rubber drive-rollers are mounted between confning discs 23 and 24 on a revoluble shaft 25 rotatable in a bearing 26 of an arm 27 mounted on and adapted to rock about an intermediate shaft 28 revoluble in a bearing 29 of the main-frame 10. Shaft 28 drives a shaft 25 by means of intermeshing gears 30 and 31 and is in turn revolved by a third shat 32 rotatably mounted in suitable bearings 33 by means of co-operating gears 34 and 35. Shaft 32 is driven by means of intermeshing bevelgears 36 and 37 the latter being mounted on the upper end of an upright shaft 381mtatable in bearings 39 vand 40 outstanding from the main-frame and revolved by a pulley 42 loose on a shaft 41 and co-acting belt 43 through a spur-gear 44 rigid with the pulley which meshes with a larger gear v45 fixed to a lower jack-shaft 46 equipped at burners 51 is automatically caused to .play

Iupon the end portion of the vial remote from the guide 19 against which its closed or bottom end bears and when it has become sutiiciently heated the necking operation is performed. f

The necking mechanism comprises a plunger 52 ,adapted to enter the mouth of the vial and remain therein durin :forming of the thread upon its outer sur Eace, such plunger having a shoulder 53 adapted to bear against the end of the neck and form itV true and smooth. rlhis plunger, as is illustrated in, Figure 1, is mounted on a sliding shaft 54 reciprocatory in a bearing 55 inthe main-frame, such. shaft being slid back and forth by the upwardly-extended arm 56 of a lever fulcrumed at 57v so as to rock on a shaft 58 supported in suitable bearings 59 and 60, the other arm 61 of the lever having a roller 62 traveling in a cam-groove cutfin the side of a cam 63 iXed on a roam-shaft 64 revolubly vmounted in bearings 65, 65 and rotated by a bevelgear 66 thereon which is in mesh with a similar gear 67 on a sleeve 68 keyed tothe shaft 41 and provided with a gear 69 in mesh with a 'smaller gear 70 fixed to shaft 46. Thus, by means of these co-acting gears the cam-shaft is driven Jfrom thebelt o erated pulley 42 all as will be readily un erstood.

The shape'of the groove of cam 63 is such that when the adjacent end of the partlyformed vial 11 `has been sufficiently heated or partly fused, the cam will cause the plunger 52 to enter such heated end and remain therein during the neck forming operation, the plunger being retracted s ubse uently at any suitable time.

he appliance is additionally equipped with a sliding shaft 71 reciprocated toward and from the work by a lever 72 mounted and free toy rock on the shaft 58,`the lower endv of 'the lever having a lroller 73 travcling in the cam-groove of a cam 7 4 mounted on and rotated by the cam-shaft 64.

Rockingly mounted transversely on the shaft 7-1 a member 75 is provided, carrying by means of a clamp 7 6 of suitable design, a shaft -or-rod v77 equipped with a threadforming roller 78 revoluble thereon, the

itch-circle ofsuch thread-producing roller leing twice the diameter of the pitch-circle of the completed threaded neck of the vial.

This roller 78 hasA two parallel threadforming grooves each of a pitch twice that of the thread which it produces on the exterior surface of the neck of the vial. Besides the element 75 shalt 71 is equipped with another similar member 80 having a clamp 81 holding a rod 82 on which islrevolubly mounted a neck-formin roller 83, the two elements 78 and 83 being parallel to one another and adapted to approach and recede from one another by reason of the rocking of their supporting members 75 and such ho es accommodating a threaded screw 88, the head 87 of which is adapted to bear against the upper-surface ofthe extension 84. Screw 86'- has an adjustable nut 88 between which and the under -iace of the boss 85 a coil-expansionspring 89 is positioned, the spring encircling the screw as is clearly illustrated. It should be clear, therelfore, that this spring tends to yieldingly press the two elements 78 and 83 toward one another, but in order to hold these parts separated, except when it is required that the shall move toward one another, the fol owing instrumentalities are employed. Rock arm 75 has a slotted lateral extension'90, the slot 91 of which accommodates A a threaded bosser lug 92 on an adjustable wedge or cam 93, theadjustment of which is secured' by a screw 94 extended throu h and fitting in the threaded aperture of t e part 92. The bevel or wedge face of the element 98 co-acts with a bifurcated arm 95 hinged to the member 75 at 98 and carrying at its other end an anti-friction roller 97. f

ln similar manner the oscillatorymember 80.is equipped with. an adjustable cam or wedge 98 co-acting with the hinged arm .99 carrying an anti-friction roller` 100.

It will be apparent that by spreading these two rollers 97 and 98 apart, the-two neck-forming elements 83 andv 78` may be maintained separated and away from the vial.v To the accomplishment of this endy an arm 101 with two opposite cam portions 102 and 103 against which the rollers 97 and 100 bear is hinged on a pin or shaft 104 in an ariii 105 .projecting outwardly from a collar or sleeve 106 on shaft 71. The outer end of the cam lever or arm 101 is pivotally connected by a right-angle connection 107 to the top end of a vertical link 108, the

with lu s 84 and 85 apertured in alignment,

menace movement by an arm 110, the hub-of which is keyed to the shaft, -and the other end of which carries a roller 111 traveling on the exterior of a properly-shaped cam 112 on cam-shaft 65.

ln these drawings the completed necked vial has been supplied with the reference character 113 and the magazine into which theI completed articles are delivered or discharged has been furnishedwith the refer ence numeral 114.

The operation ot' the machine occurs prac-A tically as follows:

The partly completed vials, such as lsections oi' glass tubes closed at one end, are delivered one by one `to the step by step operated conveyor 13 and deposited singly in thesea'ts or cavities thereof. Each tube is in turn brought up to and deposited upon the rollers 18, 18 by the conveyor, and in this position revolved by the beveled rubber discs 22 for a suiicient period of time for the completion of the heating and neckorming operations. rl`he .inished vial is subsequently moved along by the conveyor and delivered into the compartment v114.

The conveyor handles several vials at the` same time, but only one, the one on the rollers 18, is heated and`formed to shape.-

llf desired, positively acting means may be provided for raising and lowering the rubber-discs 22 and their mountings, but, inasmuch as this conveying and tube or vial rotating means is old in the prior art, it has not been deemed necessary to set it forth more fully in anni. n win be readily understood that any suitable and appropriate yfeeding and revolving means for the vials may be employed.

As soon as the rotation of thevial on the rollers 18 is instituted by the revolving discs 22 the gas and air for the one or more burners 51 is automatically turned on by means not shown but well understood in this artA and the end portion-of the vial 11 remote from theguide or gauge 19 is heated and,

when` it has been subjected suiiciently-i tov such heat, the plunger 52 enters the, same and stops with the shoulder 53 in proper position. When the heating has been com-v pleted the supply ,of gas and air is automatically turned off or reduced, as will be readilyunderstood, whereupon the shaft 71 advances bringing the two tools or rollers i' 7 8 and 83 into proper register with the end part of the vial and at the proper moment the arm 101 is rocked by its actuating cam mechanism to permit the two members 75 and 80 to respond to the action of spring 89 i which presses the two rollers 78 and 83 toward one another, thereby forming the reduced threaded neck portion of the vial, as will be readily understood. These two forming rollers are revolved solely oy their i Contact with the vial 'and as has beeneX- plained above the roller 78,., although of twice the pitch' diameter of the' threaded l neckand with parallel grooves off twice the pitch of the thread to be formed on the neck,

produces on such neck a single screw lthread the 'bottle or vial. Obviously, if 'there is any considerable friction on' the forming roller, the plastic glass of the neck is likely to be detrimentally deformed or distorted. lt is desirable or essential, therefore, that the thread forming roller should M revoluble with as little friction as possible, and accordingly it is made of considerably larger diameter than the neck for the reduction of suc-h friction. Since some via-l necks are quite small', it would require a very small forming roller to put the thread on the neck if such forming roller were to be of the same diameter as the neck, and this would leadto diiiiculty in providing suitable ball bearings for such roller because of their necessary small size. ln other words, by making the thread forming-roller larger, better and more eiiicient ball bearings can be employed with less resulting friction. The larger the `forming roller the more readily it is turned by the vial neck, and hence by having it, #for tails to a large, extent without departing from the substance and essence of the in-v vention and without the sacrice of any'of its essential benefits and advantages, and accordingly the appended claims are to be construed as broadly as permisible by the state of the prior art.

1. In a screw-necking machine of the character described, the combination of means to revolve the body to be necked, means to heatthe part of the body to be necked, a

revolubly-mounted roller having' a plural-.

ity oi? parallel thread-forming s iralf grooves of a pitch circle diameter di erent from that of the threaded neck produced, and means to operate said roller transverseeol ly of its axis toward and from the work, plurality of parallel thread-forming spiralsubstantially as described. grooves of a pitch circle diameter and of a 2. In a screw-necking machine of the pitch'di'erent from those of the threaded 10 character described, the combination of necks produced, and means to operate said 5 means to revolve the body to be necked, roller transversely of its axis toward and means to heat the part of the body to be from the Work, substantially as described. necked, a revolubly-mounted roller having a HANS N. HALVERSEN. 

